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Acidity in Wine & Why it Matters

acidity in wine

What do experts mean when they praise acidity in wine? Critics regularly enthuse about the racy acid of a German Riesling or the lively, crisp nature of a New Zealand Sauvignon Blanc. Why is acidity so important in wine appreciation?

According to tasting expert Michael Schuster in his excellent, Essential Winetasting book: “Acidity shapes and puts into relief the flavours in wine”.  Consider a well-made Beaujolais or Burgundian Pinot Noir. The red berry and cherry notes seem to pop on the palate. This is due to the acidity in wine lifting and highlighting the fruit; giving it a juicy, tangy quality.

“Acidity shapes and puts into relief the flavours in wine”.

Acidity is a crucial factor in wine balance. Low acid wines – think cheap Viognier from a hot region – can feel flat and heavy. Sweeter wine styles lacking sufficient acidity are cloying. High alcohol wines, without freshness, appear almost thick on the palate and warming on the finish.

Balance is the ultimate gauge of wine quality. When all components that make up a wine’s character – its flavours, body, acidity, alcohol, dryness/sweetness, tannin, etc. – are in harmony, you may barely even perceive them individually. Rather, they coalesce to form a cohesive whole.

Acidity is a crucial factor in wine balance…though what constitutes balance is entirely personal…

What constitutes balance, when it comes to acidity in wine,  is entirely personal however. High acid white wines like Riesling or Sauvignon Blanc can appear pleasant to some, and aggressive to others. The combination of high acidity and a very dry palate (˂2 grams/litre of residual sugar) can appear particularly austere to many tasters. Residual sugar (occurring when fermentation is stopped before transforming all grape sugars into alcohol) can be a good thing for highly acidic wines, softening their sharp edges. It may surprise you how many notoriously high acid, seemingly dry wines are actually slightly sweet. Champagne, Riesling from multiple origins, and many New Zealand Sauvignon Blanc are just a few examples.

The capacity of a wine to age well is also greatly impacted by its acidity; notably when it comes to white wine. Acidity in wine acts like a preservative, significantly slowing down oxidation and playing a role in bacterial stability.

The capacity of a wine to age well is also greatly impacted by its acidity; notably when it comes to white wine.

It might be a little more apparent now why wine writers use so many terms to describe acidity in wine. In case you are wondering how to situate all of these weird and wonderful words on the scale of low to high acidity, I tend to use the following lexicon:

Low acidity: soft, lush, flabby, thick, heavy

Medium acidity: moderate, round

Medium + acidity: fresh, bright, lively, vibrant, brisk

High acidity: crisp, zesty, zippy, racy, bracing, piercing, laser-like, tangy, mouthwatering, steely, firm

Overly high acidity: sharp, jagged, tart, hard, malic, sour

Here is a selection of pleasingly balanced medium + to high acid wines that I have enjoyed recently:

(What do VW, PW, LW mean? Check out my wine scoring system to find out.)

Man Vintners Chenin Blanc Free-run Steen 2017, Western Cape, South Africa – 88pts VW

Attractive notes of yellow fruit are underscored by steely, mineral hints on the nose. Zesty acidity is matched by a taut structure and vibrant, ripe lemon flavours on this light bodied, unoaked Chenin Blanc. Clean and citrussy on the finish. For more on the Chenin Blanc grape, click here.

Where to buy: SAQ (17.05$)

Paco & Lola Albarino 2017, Rias Baixas, Spain – 89pts. VW

Not as exuberantly fruit forward as certain Albariños, but very pleasant all the same. Bright floral aromas mingle with candied white fruits (apple, pear, peach). Light in body, this crisp, yet rounded easy-drinking white features tangy orchard fruit flavours and saline hints on the finish. For more on the Spanish grape: Albariño click here and scroll down to the 4th paragraph (on Galicia).

Where to buy: SAQ (18.20$), LCBO (19.95$)

Domaine des Fines Caillottes Pouilly Fumé 2017, Loire Valley, France – 91pts. PW

I liked this so much in a recent blind tasting that I immediately went out to buy another bottle. Drinking very well now despite its youthful vigour, this aromatic Loire Valley Sauvignon Blanc is brimming with gooseberry, tropical fruit, and grapefruit notes. Upon aeration herbaceous nuances and hints of oyster shell develop. Bracing acidity is ably balanced by the medium body and expansive palate structure. Bone-dry and unoaked, with a long, lively finish.

Where to buy: SAQ (26.40$)

Zind-Humbrecht Riesling Turkheim 2016, Alsace, France – 93pts. PW

Fantastic value for the price. Intensely fragrant and complex, with spicy aromas (cinnamon, clove, and star anise) overlaying yellow fruits, white flowers, and wet stone nuances. The medium bodied, earthy palate is lifted by pure, racy acidity and a steely structure. Mineral hints and bright yellow fruis linger on the finish.

Where to buy: SAQ (27.10$)

Oremus “Mandolas” 2016, Tokaj, Hungary – 92pts. PW

This wine is made from the Furmint grape in the Tokaj region of Hungary, better known for their sweet, botrytised Tokaji wines. An incredibly stylish wine with intriguing hints of fennel, anise, and lemon on the nose. Crisp and highly textural on the palate, with medium body and a concentrated core of lemon, quince and orchard fruit. An attractive touch of phenolic bitterness frames the long finish nicely.

Where to buy: SAQ (30.25$)

Bret Brothers Mâcon-Villages “Cuvée Ephémère” 2016, Burgundy, France – 93pts. PW

I have yet to be disappointed by a wine from this producer. This lovely Mâcon is no exception. Lovely honeysuckle, yellow peach, and stony mineral notes feature on the nose. The palate is brisk, full-bodied and richly textured with good depth of flavour (yellow apple, peach, mango hints). The fruit is tangy and bright on the long, mineral-laced finish.

Where to buy: SAQ (35.50$)

Château Thivin Côte de Brouilly Cuvée Les Sept Vignes 2016, Beaujolais, France – 91pts PW

I tasted this first at the domaine earlier this summer, and subsequently bought a bottle upon returning home. Firstly, because it was so good. Secondly, because it was the same price at the cellar door and here! This wonderfully lively red features brisk acidity, and juicy red berry, cherry, violet, and spiced flavours. It is medium bodied, with earthy hints from ageing in oak oak foudres, and lovely, velvety tannins. Serve slightly chilled.

Where to buy: SAQ (24.55$)

Castello di Monsanto Chianti Classico Riserva 2014, Tuscany, Italy – 92pts. PW

I tasted a series of Chianti from this producer recently, including an exquisite 2013 ‘Vignetto Il Poggio” that was pretty darn near perfection in my humble opinion. Sadly, the 99$ price of this wine is a little out of my reach…sigh. For less than half that price, this Chianti Classico Riserva is really fantastic. Enticing aromas of sweet, stewed tomatoes, red cherry, dried herbs, and potpourri feature on the nose. Very fresh on the palate, with a lovely chalky texture, medium body, and spicy, cedar hints. The tannins are still a little firm. Cellar for 2 – 3 years, or serve with red meat to soften the tannins.

Where to buy: SAQ (35.25$), inquire with agent about the “Il Poggio” 2013: Elixirs Vins & Spiritueux 

Education

THE RENAISSANCE OF SOUTH AFRICAN WINE – PART 2

Swartland vineyards
Photo Credit: Swartland vineyards, Wines of South Africa

In part 2 of my South Africa series, I look at some of the exciting Western Cape wine growing districts and wine producers cropping up on our liquor board shelfs. Click here for a map of the Cape winelands (courtesy of Wines of South Africa). 

The majority of South Africa’s vineyards are situated in the Western Cape, in proximity to the coast whose cooling influence tempers the otherwise baking hot growing season. This results in good acid retention and balanced wines.  Value priced offerings will often be labeled under this large, generic region or the sub-zone of the Coastal Region. These wines can be blended from across their delimited territories.

Smaller sub-divisions (named districts and wards) exist when we move up the ladder to mid-range and premium priced wines. Within these smaller vineyard areas, more specific styles emerge. The following are just a handful of the most exciting, high quality districts that we are starting to see in regular rotation here:

ELGIN: Attractively aromatic whites and vibrant light reds flourish here due to the combined cooling influence of southerly winds and moderate elevation (350 metres above sea level). Elgin lies in a basin of the Hottentots-Holland Mountains, south-east of Stellenbosch.

Chardonnay, Riesling and Sauvignon Blanc make up the bulk of white wine production, while Pinot Noir and Syrah account for much of the red wine. Paul Cluver is an excellent, mid-sized Elgin producer making consistently high quality, good value whites and reds.

STELLENBOSCH: Likely the best-known district of the Cape Winelands, wine production in Stellenbosch dates back to the 17th century. Less than one hour’s drive due east of Cape Town, the terrain here is mountainous with sufficient rainfall and well-drained soils. While a wide diversity of soil types and mesoclimates exist (owing to the varying exposition and altitude of plantings), many of the most prized vineyard sites lie on ancient decomposed granite or sandstone beds. The climate is generally hot and dry, with cooling afternoon breezes from the south-east.

Cabernet Sauvignon is king here, though Pinotage, Syrah, Chenin Blanc and Sauvignon Blanc are also produced in abundance. Over 170 wine producers call Stellenbosch home, and trade continues to flourish. Among the many excellent wineries, Rustenberg, Glenelly, Vergelegen produces good, mid-range to premium priced Bordeaux Blends, Waterkloof for fantastic, biodynamic Rhône style blends and Ken Forrester for clean, consistent, good value old vine Chenin Blanc and Sauvignon Blanc.

SWARTLAND: Traditionally a wheat-producing region, the Swartland (65km north of Cape Town) has been making waves on the international wine scene in recent years as the hot, new growing region of South Africa. Hot is indeed an apt descriptor, as well as dry, making hardy, drought resistant bush vines a common occurrence. The dominant soil type is shale, with pockets of granite and schist providing interesting alternative terroirs.

The Mediterranean climate makes for excellent Rhône style reds. Lovely Chenin Blanc is also grown here. The excitement generated by Swartland’s star producers is largely justified. Fantastic, affordable quality can be found from the Kloof Street (from the Mullineux Family Wines), A.A. Badenhorst and Leeuwenkuil (bright, juicy Cinsault). Exceptional, premium to luxury priced wines from: Mullineux Family Wines and The Sadie Family.

TULBAGH MOUNTAINS: A fairly secluded valley, inland from the Swartland, encircled by mountains to the west, north and east. Due to this unique topography, cool night time air becomes trapped in the vineyards making for chilly morning temperatures that gradually rise in the hot afternoons. Soils are quite varied making for a wide variety of styles. Only 13 wine producers reside here at present, but the acclaim of their wines speaks volumes.

Traditional method sparkling wines, called ‘Méthode Cap Classique’ are gaining traction here. Syrah and Rhône blend whites are also performing well. Krone produces easy drinking, competitively priced sparkling wines, while Fable Mountain Vineyards is garnering top accolades for their premium white and red Rhône blends.

WALKER BAY: This pretty district extends from the town of Hermanus on the south coast of the Western Cape, with the majority of top-rated vineyards lying in the aptly named Hemel-en-Aarde valley (meaning Heaven and Earth). The close proximity to the Atlantic Ocean brings cooling breezes that temper the otherwise hot climate. Clay-rich soils bring a firm structure to the wines. I spent many a happy month here, working harvest and sampling my way through the vibrant, juicy wines of the region.

Chardonnay and Pinot Noir are the star grapes of the area, though Sauvignon Blanc, Syrah and Pinotage are also gaining in popularity. Hamilton-Russell Vineyards has a long-standing reputation for fine, premium Chardonnay and Pinot Noir. Bouchard-Finlayson makes very precise, focused wines from ranging from attractively fruity mid-range whites to premium Pinot Noir. Crystallum Wines regularly impresses me with their beautifully creamy, complex wines.

 

Education

The Renaissance of South African Wine – Part 1

Hamilton Russell Estate
Photo: Hamilton Russell Vineyards (by Jacky Blisson)

In Canada, we are often a little late to the party when it comes to new wine trends. So, if you still think South Africa is only good for inexpensive, nondescript white wines, you are forgiven. After all, that is pretty much all our liquor boards were stocking for years. Happily, all that is changing.

Read on for a three part series on the renaissance of the South African wine industry: why South Africa was typecast in a cheap ‘n cheerful role and how the industry has changed, what exciting regions to look for, and finally the people behind the wines.

South African wine producers often flinch when they see their wines lumped in to the ‘New World’ wine category. Indeed, the history of winemaking dates back to 1655, with the establishment of the country’s first vineyard by then governor Jan van Riebeeck. This may seem relatively recent when compared with the first Calabrian vines planted around 1500 B.C. And it may not appear to massively pre-date the Californian and Australian industries, which both originated in the late 1700s.

What makes South Africa stand apart from other New World regions in historical terms, is how quickly Cape wines rose to international prominence. While most other non-European wine producing nations saw little growth, and minimal export sales until the late 1900s, the sweet wines of Constantia were sought after by the European ruling class in the 1700s. According to the Oxford Wine Companion, Napoleon himself had the wine shipped in during his exile on St. Helena.

Despite this promising start, a series of misfortunes befell South African wine growers which slowly eroded the high quality image the famed Constantia wine or ‘Vin de Constance’ had brought. Pests in the form of voracious, grape eating birds meant that many estates picked too early resulting in thin, acidic wines. The Phylloxera epidemic followed, decimating over a quarter of the country’s plantings by 1890.

Partly in response to the variable wine quality and poor financial returns of so many wine farmers, a ‘super cooperative’ was formed in 1915 to bring unity and improve conditions. In short order, the KWV (Kooperative Wijnbouwers Vereniging van Zuid Afrika) became a powerful, controlling force in the South African wine industry. They were responsible for setting grape and wine prices, as well as quotas for wine production. Growers were incentivized on quantity, leading to ever increasing yields.

The international sanctions imposed by the apartheid regime led to a period of isolation. South African producers were cut off from the latest innovations in viticultural and vinification techniques, and lost touch with changing international tastes and trends.

With Mandela’s liberation from prison in 1990 came a resurgence in international interest for South African wines. Sadly, by this point, most of the nation’s vineyards were in a poor state. Vineyard virus was rampant. The grape varieties planted were unfashionable; mainly Chenin Blanc, Sultana and Colombard. Wine quality was, on the whole, pretty dismal.

Given the often thin, reedy nature of the whites and astringency of the (under-ripe) reds, major market were only willing to buy in at very low rates, positioning the wines at rock bottom prices on shelf.  This set a precedent that has proved difficult for South Africa to shake off.

Fast forward a quarter of a century and the situation is radically different. The number of individual estates has more than doubled, with a growing number of small, boutique wineries commanding widespread acclaim. Massive advancements have been made in eradicating vineyard virus, reducing yields, achieving optimal ripening conditions and planting grape varieties best suited to individual vineyard sites.

The European and American press have been effusive in their praise of the new wave of top quality South African wines. Neal Martin, of Robert Parker fame, has proclaimed South Africa ‘the most dynamic and exciting New World country’. Tim Atkin MW, echoes this view, calling the wines ‘world class’.

In 2007, I spent a few months working the harvest at the top-rated Hamilton Russell Vineyards in the Walker Bay, and touring the wineries of the Western Cape. I saw first hand the incredible strides in quality. Carefully managed vineyards and impeccably clean wineries gleaming with modern technology were the norm. The producers we met were literally bursting with enthusiasm as they eagerly detailed their winemaking techniques and proudly poured their wines. It was a far cry from the cool, superior attitude I had thus far encountered when dealing with French vignerons.

High quality South African wines now exists not only at the luxury end of the spectrum, but also in the every day, sub 15$ category. Chenin Blanc continues to dominate white wine plantings, with Chardonnay and Sauvignon Blanc also enjoying high praise. Cabernet Sauvignon and Syrah are the two top seated reds, with increasing buzz generated by the bright, fruity old-vine Cinsault and elegant Pinot Noir. Gamey, smoky Pinotage (a South African created hybrid of Pinot Noir and Cinsault) provides a unique taste profile that further sets this exceptional wine region apart.

While I am loathe to place the wines of such a diverse, fast changing region into one mould, it is often true that South African wines seem to strike a stylistic balance between Old World and New. While bolder and fruitier than many European wines, they still tend to be more restrained, with greater intensity of savoury, earthy flavours than many of their American and Southern Hemisphere counterparts.